382
FNUS56 KOTX 042138
FWFOTX
FIRE WEATHER PLANNING FORECAST FOR EASTERN WASHINGTON AND NORTH IDAHO
NATIONAL WEATHER SERVICE SPOKANE WA
238 PM PDT FRI SEP 4 2026
DISCUSSION
CENTRAL WA:
- SHOWER AND THUNDERSTORM CHANCES CONTINUE THROUGH THE WEEKEND.
- FAIR TO GOOD RH RECOVERY TONIGHT.
EASTERN WA:
- SHOWER AND THUNDERSTORM CHANCES CONTINUE THROUGH THE WEEKEND.
- GOOD TO EXCELLENT RH RECOVERY TONIGHT.
NORTH ID:
- SHOWER AND THUNDERSTORM CHANCES CONTINUE THROUGH THE WEEKEND.
- GOOD TO EXCELLENT RH RECOVERY TONIGHT.
AN ACTIVE WEATHER PATTERN WILL CONTINUE THROUGH THE WEEKEND AND
EARLY NEXT WEEK. EXPECT PERIODIC SHOWERS, ISOLATED THUNDERSTORMS,
AND COOLER THAN NORMAL TEMPERATURES.
***************************************************************
FORECASTS FOR 20 FOOT WIND SPEEDS (VALLEYS AND RIDGE TOPS) ARE
10 MINUTE AVERAGES REFLECTING RAWS WIND.
***VENTILATION INDEX IS DERIVED FROM TRANSPORT WIND
MULTIPLIED BY THE MIXING HEIGHT DIVIDED BY 100.
CATEGORIES: LOW (< 200), MODERATE (200-500),
HIGH (500-800), AND VERY HIGH (> 800).
***************************************************************
WAZ696-698-051330-
EAST WASHINGTON CENTRAL CASCADES (ZONE 696)-
EAST WASHINGTON NORTH CASCADES (ZONE 698)-
INCLUDING THE CITIES OF STEVENS PASS, LAKE WENATCHEE AREA,
AND LEAVENWORTH
238 PM PDT FRI SEP 4 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY. A
CHANCE OF RAIN SHOWERS IN THE EVENING.
* CHANCE OF LIGHTNING...10 PERCENT.
* MIN TEMPERATURE.....44-51 VALLEYS AND 36-46 MOUNTAINS.
* 24 HR TREND........1 DEGREE WARMER.
* MAX HUMIDITY........65-80 PERCENT.
* 24 HR TREND........20 PERCENT DRIER.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST UP TO 4 MPH.
* RIDGES/UPR SLOPES....NORTHWEST UP TO 5 MPH.
* MIXING HEIGHT.......4000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (336) IN THE EVENING DECREASING TO
LOW (30) OVERNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY SUNNY. A CHANCE OF RAIN SHOWERS IN THE
LATE MORNING AND AFTERNOON. A CHANCE OF THUNDERSTORMS IN THE
AFTERNOON.
* CHANCE OF LIGHTNING...20 PERCENT.
* MAX TEMPERATURE.....65-75 VALLEYS AND 53-63 MOUNTAINS.
* 24 HR TREND........7 DEGREES WARMER.
* MIN HUMIDITY........35-50 PERCENT VALLEYS AND 45-60 PERCENT
MOUNTAINS.
* 24 HR TREND........15 PERCENT DRIER VALLEYS, AND 20 PERCENT DRIER
MOUNTAINS.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHEAST 3 TO 5 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST 3 TO 6 MPH.
* MIXING HEIGHT.......5000 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (366).
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS
THROUGH THE NIGHT.
* CHANCE OF LIGHTNING...10 PERCENT.
* MIN TEMPERATURE.....45-52 VALLEYS AND 37-47 MOUNTAINS.
* MAX HUMIDITY........61-80 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH UP TO 5 MPH.
* RIDGES/UPR SLOPES....NORTH UP TO 5 MPH.
* MIXING HEIGHT.......3500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (316) IN THE EVENING DECREASING TO
LOW (67) OVERNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY SUNNY. A CHANCE OF RAIN SHOWERS IN THE
LATE MORNING AND AFTERNOON.
* CHANCE OF LIGHTNING...10 PERCENT.
* MAX TEMPERATURE.....68-78 VALLEYS AND 56-66 MOUNTAINS.
* MIN HUMIDITY........35-45 PERCENT VALLEYS AND 40-55 PERCENT
MOUNTAINS.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH UP TO 6 MPH IN THE MORNING SHIFTING TO
THE EAST UP TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHEAST 3 TO 6 MPH.
* MIXING HEIGHT.......6000 FT AGL.
* TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (373).
FORECAST DAYS 3 THROUGH 7...
LABOR DAY THROUGH TUESDAY
PARTLY CLOUDY. LOWS 48 TO
58 VALLEYS...40 TO 50 MOUNTAINS. HIGHS 69 TO 79 VALLEYS...58 TO
68 MOUNTAINS. NORTHWEST WIND UP TO 10 MPH.
WEDNESDAY...PARTLY CLOUDY. LOWS 52 TO 62 VALLEYS
44 TO
54 MOUNTAINS. HIGHS 76 TO 86 VALLEYS...64 TO 74 MOUNTAINS. WEST
WIND UP TO 5 MPH.
THURSDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 54 TO
64 VALLEYS...46 TO 56 MOUNTAINS. HIGHS 75 TO 85 VALLEYS...62 TO
72 MOUNTAINS.
FRIDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 52 TO
61 VALLEYS...45 TO 55 MOUNTAINS. HIGHS 69 TO 79 VALLEYS...56 TO
66 MOUNTAINS.
.8 TO 14 DAY OUTLOOK FOR SEP 12 - 18 2026
BELOW NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ697-051330-
EAST PORTION OF NORTH CASCADES NATIONAL PARK/LAKE CHELAN NATIONAL
RECREATION AREA (ZONE 697)-
INCLUDING THE CITY OF STEHEKIN
238 PM PDT FRI SEP 4 2026
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY. A
CHANCE OF THUNDERSTORMS EARLY IN THE EVENING. A CHANCE OF RAIN
SHOWERS IN THE EVENING.
* CHANCE OF LIGHTNING...20 PERCENT.
* MIN TEMPERATURE.....43-48 VALLEYS AND 34-42 MOUNTAINS.
* 24 HR TREND........UNCHANGED.
* MAX HUMIDITY........55-70 PERCENT VALLEYS AND 65-80 PERCENT
MOUNTAINS.
* 24 HR TREND........35 PERCENT DRIER VALLEYS, AND 20 PERCENT DRIER
MOUNTAINS.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH UP TO 3 MPH.
* RIDGES/UPR SLOPES....NORTHWEST 3 TO 6 MPH IN THE EVENING SHIFTING
TO THE EAST OVERNIGHT.
* MIXING HEIGHT.......3000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....EAST AROUND 5 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...LOW (174).
SATURDAY
* SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING MOSTLY CLOUDY. A
CHANCE OF RAIN SHOWERS IN THE LATE MORNING AND AFTERNOON. A
CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
* CHANCE OF LIGHTNING...50 PERCENT.
* MAX TEMPERATURE.....66-76 VALLEYS AND 54-64 MOUNTAINS.
* 24 HR TREND........4 DEGREES WARMER.
* MIN HUMIDITY........40-55 PERCENT.
* 24 HR TREND........UNCHANGED VALLEYS, AND 5 PERCENT DRIER
MOUNTAINS.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHEAST 3 TO 6 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST 3 TO 6 MPH.
* MIXING HEIGHT.......5000 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....20 PERCENT.
* VENTILATION INDEX...MODERATE (334).
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF THUNDERSTORMS
EARLY IN THE EVENING. A CHANCE OF RAIN SHOWERS THROUGH THE NIGHT.
* CHANCE OF LIGHTNING...20 PERCENT.
* MIN TEMPERATURE.....43-48 VALLEYS AND 35-43 MOUNTAINS.
* MAX HUMIDITY........55-65 PERCENT VALLEYS AND 61-80 PERCENT
MOUNTAINS.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHEAST 3 TO 7 MPH.
* RIDGES/UPR SLOPES....NORTHEAST 3 TO 7 MPH.
* MIXING HEIGHT.......2500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....EAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....30 PERCENT.
* VENTILATION INDEX...MODERATE (214).
SUNDAY
* SKY/WEATHER.........PARTLY SUNNY. A CHANCE OF RAIN SHOWERS IN THE
AFTERNOON.
* CHANCE OF LIGHTNING...10 PERCENT.
* MAX TEMPERATURE.....69-79 VALLEYS AND 57-67 MOUNTAINS.
* MIN HUMIDITY........35-50 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHEAST 3 TO 6 MPH.
* RIDGES/UPR SLOPES....NORTHEAST 3 TO 6 MPH.
* MIXING HEIGHT.......6500 FT AGL.
* TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (290) IN THE MORNING INCREASING TO
MODERATE (398) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
LABOR DAY...MOSTLY CLOUDY. LOWS 45 TO 51 VALLEYS
37 TO
46 MOUNTAINS. HIGHS 67 TO 77 VALLEYS...54 TO 64 MOUNTAINS. WEST
WIND UP TO 10 MPH.
TUESDAY...PARTLY CLOUDY. LOWS 50 TO 59 VALLEYS
41 TO
51 MOUNTAINS. HIGHS 72 TO 82 VALLEYS...60 TO 70 MOUNTAINS.
NORTHWEST WIND UP TO 10 MPH.
WEDNESDAY...PARTLY CLOUDY. LOWS 53 TO 62 VALLEYS
44 TO
54 MOUNTAINS. HIGHS 77 TO 87 VALLEYS...65 TO 75 MOUNTAINS. WEST
WIND UP TO 5 MPH.
THURSDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 55 TO
64 VALLEYS...46 TO 56 MOUNTAINS. HIGHS 75 TO 85 VALLEYS...63 TO
73 MOUNTAINS.
FRIDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 54 TO
62 VALLEYS...45 TO 55 MOUNTAINS. HIGHS 69 TO 79 VALLEYS...56 TO
66 MOUNTAINS.
.8 TO 14 DAY OUTLOOK FOR SEP 12 - 18 2026
BELOW NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ704-051330-
METHOW VALLEY (ZONE 704)-
INCLUDING THE CITIES OF MAZAMA, WINTHROP, AND TWISP
238 PM PDT FRI SEP 4 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS EARLY
IN THE EVENING.
* CHANCE OF LIGHTNING...10 PERCENT.
* MIN TEMPERATURE.....45-53.
* 24 HR TREND........1 DEGREE COOLER.
* MAX HUMIDITY........61-80 PERCENT.
* 24 HR TREND........30 PERCENT DRIER.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......SOUTHEAST UP TO 4 MPH IN THE EVENING SHIFTING
TO THE NORTH OVERNIGHT.
* MIXING HEIGHT.......5500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (418) IN THE EVENING DECREASING TO
LOW (33) OVERNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS IN
THE LATE MORNING AND AFTERNOON. A CHANCE OF THUNDERSTORMS IN THE
AFTERNOON.
* CHANCE OF LIGHTNING...20 PERCENT.
* MAX TEMPERATURE.....67-75.
* 24 HR TREND........4 DEGREES WARMER.
* MIN HUMIDITY........29-35 PERCENT.
* 24 HR TREND........UNCHANGED.
* 20-FOOT WINDS.......NORTH UP TO 4 MPH IN THE MORNING SHIFTING TO
THE SOUTH 3 TO 5 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......6500 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (262) IN THE MORNING INCREASING TO
MODERATE (412) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS
THROUGH THE NIGHT.
* CHANCE OF LIGHTNING...10 PERCENT.
* MIN TEMPERATURE.....46-54.
* MAX HUMIDITY........61-80 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......NORTHWEST UP TO 4 MPH.
* MIXING HEIGHT.......4500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (343) IN THE EVENING DECREASING TO
LOW (56) OVERNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY SUNNY. A CHANCE OF RAIN SHOWERS LATE
IN THE AFTERNOON.
* CHANCE OF LIGHTNING...10 PERCENT.
* MAX TEMPERATURE.....70-78.
* MIN HUMIDITY........27-35 PERCENT.
* 20-FOOT WINDS.......NORTHWEST UP TO 6 MPH IN THE MORNING SHIFTING
TO THE EAST UP TO 4 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......6000 FT AGL.
* TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (352).
FORECAST DAYS 3 THROUGH 7...
LABOR DAY THROUGH TUESDAY
PARTLY CLOUDY. LOWS 47 TO 57. HIGHS
71 TO 80. WEST WIND UP TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 49 TO 59. HIGHS 76 TO 85. SOUTH
WIND UP TO 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 51 TO 61. HIGHS 76 TO 85.
FRIDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 50 TO 59.
HIGHS 71 TO 79.
.8 TO 14 DAY OUTLOOK FOR SEP 12 - 18 2026
BELOW NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ703-051330-
OKANOGAN VALLEY (ZONE 703)-
INCLUDING THE CITIES OF CONCONULLY AND OMAK
238 PM PDT FRI SEP 4 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....46-52.
* 24 HR TREND........2 DEGREES COOLER.
* MAX HUMIDITY........60-75 PERCENT.
* 24 HR TREND........15 PERCENT DRIER.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......SOUTHEAST 3 TO 6 MPH IN THE EVENING SHIFTING
TO THE NORTH 3 TO 7 MPH OVERNIGHT.
* MIXING HEIGHT.......6000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (404) IN THE EVENING DECREASING TO
LOW (37) OVERNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS IN
THE AFTERNOON.
* CHANCE OF LIGHTNING...10 PERCENT.
* MAX TEMPERATURE.....68-77.
* 24 HR TREND........4 DEGREES WARMER.
* MIN HUMIDITY........30-40 PERCENT.
* 24 HR TREND........UNCHANGED.
* 20-FOOT WINDS.......NORTH 3 TO 9 MPH IN THE MORNING SHIFTING TO
THE SOUTHEAST 3 TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (392).
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS
THROUGH THE NIGHT.
* CHANCE OF LIGHTNING...10 PERCENT.
* MIN TEMPERATURE.....48-53.
* MAX HUMIDITY........60-75 PERCENT.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......NORTHWEST 3 TO 7 MPH.
* MIXING HEIGHT.......4000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (283) IN THE EVENING DECREASING TO
LOW (59) OVERNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY SUNNY. A CHANCE OF RAIN SHOWERS LATE
IN THE AFTERNOON.
* CHANCE OF LIGHTNING...10 PERCENT.
* MAX TEMPERATURE.....69-79.
* MIN HUMIDITY........30-40 PERCENT.
* 20-FOOT WINDS.......NORTH 3 TO 10 MPH.
* MIXING HEIGHT.......6000 FT AGL.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (348).
FORECAST DAYS 3 THROUGH 7...
LABOR DAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 48 TO
57. HIGHS 72 TO 80. NORTHWEST WIND UP TO 10 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 51 TO 57. HIGHS 71 TO 79.
SOUTHWEST WIND UP TO 5 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 53 TO 59. HIGHS 76 TO 85. WEST
WIND UP TO 10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 54 TO 60. HIGHS 76 TO 85.
FRIDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 54 TO 59.
HIGHS 71 TO 80.
.8 TO 14 DAY OUTLOOK FOR SEP 12 - 18 2026
BELOW NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ702-051330-
COLVILLE RESERVATION (ZONE 702)-
INCLUDING THE CITIES OF NESPELEM AND KELLER
238 PM PDT FRI SEP 4 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS
EARLY IN THE EVENING.
* CHANCE OF LIGHTNING...10 PERCENT.
* MIN TEMPERATURE.....42-48.
* 24 HR TREND........4 DEGREES COOLER.
* MAX HUMIDITY........60-75 PERCENT.
* 24 HR TREND........15 PERCENT DRIER VALLEYS, AND 25 PERCENT DRIER
MOUNTAINS.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHEAST UP TO 6 MPH.
* RIDGES/UPR SLOPES....NORTHEAST UP TO 6 MPH.
* MIXING HEIGHT.......5500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....EAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (317) IN THE EVENING DECREASING TO
LOW (32) OVERNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS IN
THE AFTERNOON.
* CHANCE OF LIGHTNING...10 PERCENT.
* MAX TEMPERATURE.....67-76 VALLEYS AND 60-70 MOUNTAINS.
* 24 HR TREND........6 DEGREES WARMER.
* MIN HUMIDITY........35-40 PERCENT VALLEYS AND 40-50 PERCENT
MOUNTAINS.
* 24 HR TREND........UNCHANGED.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH 3 TO 6 MPH IN THE MORNING SHIFTING TO
THE SOUTH 3 TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHEAST 3 TO 6 MPH IN THE MORNING SHIFTING
TO THE SOUTHEAST 3 TO 5 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....EAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (373).
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS
THROUGH THE NIGHT.
* CHANCE OF LIGHTNING...10 PERCENT.
* MIN TEMPERATURE.....44-50.
* MAX HUMIDITY........65-80 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH 3 TO 6 MPH.
* RIDGES/UPR SLOPES....NORTH 3 TO 6 MPH.
* MIXING HEIGHT.......4500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (242) IN THE EVENING DECREASING TO
LOW (38) OVERNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY SUNNY. A CHANCE OF RAIN SHOWERS IN THE
AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....68-78 VALLEYS AND 62-71 MOUNTAINS.
* MIN HUMIDITY........35-45 PERCENT VALLEYS AND 40-55 PERCENT
MOUNTAINS.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH 3 TO 7 MPH.
* RIDGES/UPR SLOPES....NORTH 3 TO 7 MPH.
* MIXING HEIGHT.......6000 FT AGL.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (345).
FORECAST DAYS 3 THROUGH 7...
LABOR DAY
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS. LOWS
46 TO 53. HIGHS 69 TO 79 VALLEYS...62 TO 72 MOUNTAINS. WEST WIND
UP TO 10 MPH.
TUESDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 49 TO
55. HIGHS 68 TO 78 VALLEYS...62 TO 71 MOUNTAINS. SOUTH WIND UP TO
5 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 50 TO 55. HIGHS 74 TO
84 VALLEYS...68 TO 77 MOUNTAINS. WEST WIND UP TO 5 MPH.
THURSDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 52 TO
58. HIGHS 74 TO 84 VALLEYS...67 TO 77 MOUNTAINS.
FRIDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 52 TO 57.
HIGHS 70 TO 80 VALLEYS...63 TO 72 MOUNTAINS.
.8 TO 14 DAY OUTLOOK FOR SEP 12 - 18 2026
BELOW NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ699-051330-
OKANOGAN HIGHLANDS AND KETTLE MOUNTAINS (ZONE 699)-
INCLUDING THE CITIES OF REPUBLIC AND CURLEW
238 PM PDT FRI SEP 4 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS
EARLY IN THE EVENING.
* CHANCE OF LIGHTNING...10 PERCENT.
* MIN TEMPERATURE.....39-46.
* 24 HR TREND........3 DEGREES COOLER.
* MAX HUMIDITY........80-90 PERCENT VALLEYS AND 65-80 PERCENT
MOUNTAINS.
* 24 HR TREND........10 PERCENT WETTER VALLEYS, AND 10 PERCENT
DRIER MOUNTAINS.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHEAST UP TO 5 MPH.
* RIDGES/UPR SLOPES....NORTHEAST UP TO 5 MPH.
* MIXING HEIGHT.......3500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....EAST AROUND 5 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (209).
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS IN
THE LATE MORNING AND AFTERNOON.
* CHANCE OF LIGHTNING...10 PERCENT.
* MAX TEMPERATURE.....67-77 VALLEYS AND 60-68 MOUNTAINS.
* 24 HR TREND........6 DEGREES WARMER.
* MIN HUMIDITY........30-40 PERCENT VALLEYS AND 35-50 PERCENT
MOUNTAINS.
* 24 HR TREND........5 PERCENT DRIER.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH UP TO 5 MPH IN THE MORNING SHIFTING TO
THE SOUTH 3 TO 5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHEAST UP TO 5 MPH IN THE MORNING
SHIFTING TO THE SOUTH 3 TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....EAST AROUND 5 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (392).
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF SHOWERS AND
THUNDERSTORMS EARLY IN THE EVENING, THEN A CHANCE OF RAIN SHOWERS
IN THE LATE EVENING AND OVERNIGHT.
* CHANCE OF LIGHTNING...20 PERCENT.
* MIN TEMPERATURE.....41-48.
* MAX HUMIDITY........80-90 PERCENT VALLEYS AND 65-80 PERCENT
MOUNTAINS.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHEAST UP TO 5 MPH.
* RIDGES/UPR SLOPES....NORTHEAST UP TO 5 MPH.
* MIXING HEIGHT.......4000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (273) IN THE EVENING DECREASING TO
LOW (55) OVERNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY SUNNY. A CHANCE OF RAIN SHOWERS IN THE
LATE MORNING AND AFTERNOON.
* CHANCE OF LIGHTNING...10 PERCENT.
* MAX TEMPERATURE.....69-79 VALLEYS AND 61-70 MOUNTAINS.
* MIN HUMIDITY........35-45 PERCENT VALLEYS AND 40-55 PERCENT
MOUNTAINS.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH 3 TO 5 MPH.
* RIDGES/UPR SLOPES....NORTH 3 TO 5 MPH.
* MIXING HEIGHT.......6000 FT AGL.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (359).
FORECAST DAYS 3 THROUGH 7...
LABOR DAY
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS. LOWS
42 TO 49. HIGHS 69 TO 78 VALLEYS...61 TO 70 MOUNTAINS. NORTHWEST
WIND UP TO 5 MPH.
TUESDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 45 TO
53. HIGHS 69 TO 78 VALLEYS...61 TO 70 MOUNTAINS. SOUTHWEST WIND
UP TO 5 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 46 TO 54. HIGHS 75 TO
84 VALLEYS...67 TO 76 MOUNTAINS. WEST WIND UP TO 5 MPH.
THURSDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 48 TO
56. HIGHS 74 TO 84 VALLEYS...67 TO 76 MOUNTAINS.
FRIDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 48 TO 56.
HIGHS 69 TO 79 VALLEYS...62 TO 71 MOUNTAINS.
.8 TO 14 DAY OUTLOOK FOR SEP 12 - 18 2026
BELOW NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ700-701-051330-
SELKIRK MOUNTAINS OF NORTHEAST WASHINGTON (ZONE 700)-
FOOTHILLS OF NORTHEAST WASHINGTON (ZONE 701)-
INCLUDING THE CITIES OF METALINE FALLS, IONE, COLVILLE,
DEER PARK, AND NEWPORT
238 PM PDT FRI SEP 4 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...10 PERCENT.
* MIN TEMPERATURE.....39-46.
* 24 HR TREND........8 DEGREES COOLER.
* MAX HUMIDITY........80-90 PERCENT.
* 24 HR TREND........10 PERCENT WETTER VALLEYS, AND 20 PERCENT
DRIER MOUNTAINS.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHEAST UP TO 5 MPH.
* RIDGES/UPR SLOPES....NORTHEAST UP TO 6 MPH.
* MIXING HEIGHT.......4500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...LOW (176).
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF SHOWERS AND
THUNDERSTORMS LATE IN THE AFTERNOON.
* CHANCE OF LIGHTNING...20 PERCENT.
* MAX TEMPERATURE.....69-76 VALLEYS AND 60-69 MOUNTAINS.
* 24 HR TREND........7 DEGREES WARMER.
* MIN HUMIDITY........35-45 PERCENT VALLEYS AND 40-55 PERCENT
MOUNTAINS.
* 24 HR TREND........UNCHANGED.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH 2 TO 4 MPH IN THE MORNING
SHIFTING TO THE SOUTH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHEAST 3 TO 6 MPH IN THE MORNING
SHIFTING TO THE SOUTH IN THE AFTERNOON.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....EAST AROUND 5 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (227) IN THE MORNING INCREASING TO
MODERATE (448) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF THUNDERSTORMS IN
THE EVENING. A CHANCE OF RAIN SHOWERS THROUGH THE NIGHT.
* CHANCE OF LIGHTNING...20 PERCENT.
* MIN TEMPERATURE.....42-48.
* MAX HUMIDITY........80-90 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH UP TO 6 MPH.
* RIDGES/UPR SLOPES....NORTH UP TO 7 MPH.
* MIXING HEIGHT.......4000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....20 PERCENT.
* VENTILATION INDEX...MODERATE (284) IN THE EVENING DECREASING TO
LOW (32) OVERNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS IN
THE LATE MORNING AND AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....70-77 VALLEYS AND 61-70 MOUNTAINS.
* MIN HUMIDITY........40-50 PERCENT VALLEYS AND 45-60 PERCENT
MOUNTAINS.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTH 3 TO 6 MPH.
* RIDGES/UPR SLOPES....NORTH 3 TO 6 MPH.
* MIXING HEIGHT.......6000 FT AGL.
* TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (342).
FORECAST DAYS 3 THROUGH 7...
LABOR DAY
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS. LOWS
44 TO 50. HIGHS 68 TO 76 VALLEYS...58 TO 67 MOUNTAINS. SOUTHWEST
WIND UP TO 5 MPH.
TUESDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 42 TO
52. HIGHS 69 TO 76 VALLEYS...59 TO 69 MOUNTAINS. SOUTH WIND UP TO
5 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 42 TO 52. HIGHS 76 TO
83 VALLEYS...66 TO 76 MOUNTAINS. EAST WIND UP TO 5 MPH.
THURSDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 45 TO
55. HIGHS 76 TO 83 VALLEYS...66 TO 75 MOUNTAINS.
FRIDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 45 TO 55.
HIGHS 71 TO 78 VALLEYS...61 TO 70 MOUNTAINS.
.8 TO 14 DAY OUTLOOK FOR SEP 12 - 18 2026
BELOW NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
IDZ101-051330-
NORTHERN AND CENTRAL IDAHO PANHANDLE (ZONE 101)-
INCLUDING THE CITIES OF ST. MARIES, RATHDRUM PRAIRIE,
SILVER VALLEY, BONNERS FERRY, AND PRIEST LAKE
238 PM PDT FRI SEP 4 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY. A
CHANCE OF RAIN SHOWERS EARLY IN THE EVENING.
* CHANCE OF LIGHTNING...10 PERCENT.
* MIN TEMPERATURE.....40-46.
* 24 HR TREND........6 DEGREES COOLER.
* MAX HUMIDITY........80-90 PERCENT.
* 24 HR TREND........UNCHANGED VALLEYS, AND 20 PERCENT DRIER
MOUNTAINS.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHEAST UP TO 6 MPH.
* RIDGES/UPR SLOPES....NORTHEAST UP TO 6 MPH.
* MIXING HEIGHT.......3500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...LOW (155).
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS IN
THE LATE MORNING AND AFTERNOON. A CHANCE OF THUNDERSTORMS IN THE
AFTERNOON.
* CHANCE OF LIGHTNING...20 PERCENT.
* MAX TEMPERATURE.....69-75 VALLEYS AND 60-70 MOUNTAINS.
* 24 HR TREND........7 DEGREES WARMER.
* MIN HUMIDITY........40-50 PERCENT VALLEYS AND 50-65 PERCENT
MOUNTAINS.
* 24 HR TREND........UNCHANGED.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHEAST 2 TO 4 MPH IN THE MORNING
SHIFTING TO THE SOUTHWEST IN THE AFTERNOON.
* RIDGES/UPR SLOPES....EAST 3 TO 6 MPH IN THE MORNING SHIFTING
TO THE SOUTHWEST IN THE AFTERNOON.
* MIXING HEIGHT.......6500 FT AGL.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (261) IN THE MORNING INCREASING TO
HIGH (509) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS EARLY
IN THE EVENING. A CHANCE OF THUNDERSTORMS IN THE EVENING. A
CHANCE OF RAIN SHOWERS IN THE LATE EVENING AND OVERNIGHT.
* CHANCE OF LIGHTNING...20 PERCENT.
* MIN TEMPERATURE.....43-48.
* MAX HUMIDITY........81-100 PERCENT VALLEYS AND 75-90 PERCENT
MOUNTAINS.
* HUMIDITY RECOVERY...EXCELLENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHEAST 3 TO 6 MPH.
* RIDGES/UPR SLOPES....NORTHEAST 3 TO 7 MPH.
* MIXING HEIGHT.......2500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...LOW (192).
SUNDAY
* SKY/WEATHER.........PARTLY SUNNY. A CHANCE OF RAIN SHOWERS
THROUGH THE DAY. A CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
* CHANCE OF LIGHTNING...20 PERCENT.
* MAX TEMPERATURE.....69-75 VALLEYS AND 61-71 MOUNTAINS.
* MIN HUMIDITY........45-60 PERCENT VALLEYS AND 55-70 PERCENT
MOUNTAINS.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHEAST 3 TO 6 MPH.
* RIDGES/UPR SLOPES....NORTHEAST 3 TO 6 MPH.
* MIXING HEIGHT.......5000 FT AGL.
* TRANSPORT WINDS.....EAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....20 PERCENT.
* VENTILATION INDEX...LOW (199) IN THE MORNING INCREASING TO
MODERATE (436) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
LABOR DAY
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS. LOWS
44 TO 51. HIGHS 63 TO 72 VALLEYS...54 TO 64 MOUNTAINS. SOUTHWEST
WIND UP TO 10 MPH.
TUESDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 43 TO
53. HIGHS 68 TO 74 VALLEYS...59 TO 69 MOUNTAINS. SOUTH WIND UP TO
10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 44 TO 53. HIGHS 75 TO
81 VALLEYS...66 TO 76 MOUNTAINS. SOUTH WIND UP TO 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 47 TO 56. HIGHS 75 TO
82 VALLEYS...66 TO 76 MOUNTAINS.
FRIDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 48 TO 57.
HIGHS 70 TO 76 VALLEYS...61 TO 71 MOUNTAINS.
.8 TO 14 DAY OUTLOOK FOR SEP 12 - 18 2026
BELOW NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ707-051330-
WESTERN COLUMBIA BASIN (ZONE 707)-
INCLUDING THE CITIES OF MOSES LAKE AND EPHRATA
238 PM PDT FRI SEP 4 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....46-52.
* 24 HR TREND........3 DEGREES COOLER.
* MAX HUMIDITY........70-80 PERCENT.
* 24 HR TREND........UNCHANGED.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......EAST 3 TO 6 MPH IN THE EVENING SHIFTING TO
THE NORTH 3 TO 8 MPH OVERNIGHT.
* MIXING HEIGHT.......7000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (311) IN THE EVENING DECREASING TO
LOW (41) OVERNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS
LATE IN THE AFTERNOON.
* CHANCE OF LIGHTNING...10 PERCENT.
* MAX TEMPERATURE.....72-75.
* 24 HR TREND........3 DEGREES WARMER.
* MIN HUMIDITY........35-45 PERCENT.
* 24 HR TREND........UNCHANGED.
* 20-FOOT WINDS.......NORTHEAST 3 TO 8 MPH IN THE MORNING SHIFTING
TO THE SOUTH 3 TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....EAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (475).
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY. A
CHANCE OF RAIN SHOWERS IN THE EVENING.
* CHANCE OF LIGHTNING...10 PERCENT.
* MIN TEMPERATURE.....46-53.
* MAX HUMIDITY........70-80 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......SOUTHWEST 3 TO 5 MPH IN THE EVENING SHIFTING
TO THE NORTH 3 TO 8 MPH OVERNIGHT.
* MIXING HEIGHT.......5000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (364) IN THE EVENING DECREASING TO
LOW (48) OVERNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY SUNNY. A CHANCE OF RAIN SHOWERS IN THE
AFTERNOON.
* CHANCE OF LIGHTNING...10 PERCENT.
* MAX TEMPERATURE.....74-78.
* MIN HUMIDITY........35-45 PERCENT.
* 20-FOOT WINDS.......NORTH 3 TO 10 MPH.
* MIXING HEIGHT.......6500 FT AGL.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...HIGH (520).
FORECAST DAYS 3 THROUGH 7...
LABOR DAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 49 TO
56. HIGHS 75 TO 81. SOUTHWEST WIND 5 TO 10 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 47 TO 56. HIGHS 76 TO 81.
SOUTHEAST WIND UP TO 5 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 49 TO 58. HIGHS 81 TO 86.
NORTHEAST WIND UP TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 52 TO 61. HIGHS 82 TO 87.
FRIDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 51 TO 60.
HIGHS 77 TO 82.
.8 TO 14 DAY OUTLOOK FOR SEP 12 - 18 2026
BELOW NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ708-051330-
EASTERN COLUMBIA BASIN - PALOUSE - SPOKANE AREA (ZONE 708)-
INCLUDING THE CITIES OF SPOKANE, PULLMAN, RITZVILLE, WILBUR,
AND CHENEY
238 PM PDT FRI SEP 4 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS
EARLY IN THE EVENING.
* CHANCE OF LIGHTNING...10 PERCENT.
* MIN TEMPERATURE.....44-49.
* 24 HR TREND........3 DEGREES COOLER.
* MAX HUMIDITY........75-90 PERCENT.
* 24 HR TREND........10 PERCENT DRIER.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......NORTHEAST 3 TO 6 MPH.
* MIXING HEIGHT.......6000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (266) IN THE EVENING DECREASING TO
LOW (37) OVERNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS
LATE IN THE AFTERNOON.
* CHANCE OF LIGHTNING...10 PERCENT.
* MAX TEMPERATURE.....71-76.
* 24 HR TREND........7 DEGREES WARMER.
* MIN HUMIDITY........35-40 PERCENT.
* 24 HR TREND........UNCHANGED.
* 20-FOOT WINDS.......NORTHEAST 3 TO 6 MPH IN THE MORNING SHIFTING
TO THE SOUTH 3 TO 5 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....EAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (446).
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS IN
THE EVENING.
* CHANCE OF LIGHTNING...10 PERCENT.
* MIN TEMPERATURE.....45-49.
* MAX HUMIDITY........75-90 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......SOUTHWEST 3 TO 5 MPH IN THE EVENING SHIFTING
TO THE NORTHEAST 3 TO 6 MPH OVERNIGHT.
* MIXING HEIGHT.......5500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (402) IN THE EVENING DECREASING TO
LOW (40) OVERNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS LATE
IN THE AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....72-77.
* MIN HUMIDITY........40-45 PERCENT.
* 20-FOOT WINDS.......NORTHEAST 3 TO 7 MPH.
* MIXING HEIGHT.......6500 FT AGL.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (290) IN THE MORNING INCREASING TO
MODERATE (499) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
LABOR DAY
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS. LOWS
NEAR 50. HIGHS 68 TO 76. SOUTHWEST WIND UP TO 10 MPH.
TUESDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 44 TO
52. HIGHS 73 TO 80. SOUTHEAST WIND UP TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 44 TO 53. HIGHS 79 TO 85. EAST
WIND UP TO 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 48 TO 56. HIGHS 80 TO 86.
FRIDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 49 TO 56.
HIGHS 75 TO 82.
.8 TO 14 DAY OUTLOOK FOR SEP 12 - 18 2026
BELOW NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ709-051330-
LOWER PALOUSE - SNAKE RIVER (ZONE 709)-
INCLUDING THE CITY OF POMEROY
238 PM PDT FRI SEP 4 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS IN
THE EVENING.
* CHANCE OF LIGHTNING...10 PERCENT.
* MIN TEMPERATURE.....47-52.
* 24 HR TREND........2 DEGREES WARMER.
* MAX HUMIDITY........65-80 PERCENT.
* 24 HR TREND........10 PERCENT DRIER.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......SOUTH 3 TO 5 MPH.
* MIXING HEIGHT.......4500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (301) IN THE EVENING DECREASING TO
LOW (35) OVERNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS IN
THE LATE MORNING AND AFTERNOON. A CHANCE OF THUNDERSTORMS IN THE
AFTERNOON.
* CHANCE OF LIGHTNING...20 PERCENT.
* MAX TEMPERATURE.....67-77.
* 24 HR TREND........3 DEGREES WARMER.
* MIN HUMIDITY........40-55 PERCENT.
* 24 HR TREND........5 PERCENT WETTER.
* 20-FOOT WINDS.......WEST 3 TO 6 MPH.
* MIXING HEIGHT.......5000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...LOW (158) IN THE MORNING INCREASING TO
MODERATE (389) IN THE AFTERNOON.
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS IN
THE EVENING.
* CHANCE OF LIGHTNING...10 PERCENT.
* MIN TEMPERATURE.....48-52.
* MAX HUMIDITY........71-90 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......SOUTHWEST 3 TO 6 MPH IN THE EVENING SHIFTING
TO THE SOUTHEAST UP TO 3 MPH OVERNIGHT.
* MIXING HEIGHT.......2000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHEAST 5 TO 15 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (285) IN THE EVENING DECREASING TO
LOW (40) OVERNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS IN
THE LATE MORNING AND AFTERNOON.
* CHANCE OF LIGHTNING...10 PERCENT.
* MAX TEMPERATURE.....68-78.
* MIN HUMIDITY........40-55 PERCENT.
* 20-FOOT WINDS.......SOUTHEAST UP TO 4 MPH IN THE MORNING SHIFTING
TO THE NORTHWEST 3 TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......5000 FT AGL.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...LOW (167) IN THE MORNING INCREASING TO
MODERATE (414) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
LABOR DAY
MOSTLY CLOUDY WITH RAIN SHOWERS LIKELY. LOWS 50 TO
55. HIGHS 66 TO 76. SOUTHWEST WIND 5 TO 15 MPH.
TUESDAY
PARTLY CLOUDY. LOWS NEAR 50. HIGHS 71 TO 81. SOUTHEAST
WIND UP TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS IN THE LOWER TO MID 50S. HIGHS
77 TO 87. EAST WIND UP TO 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS IN THE MID TO UPPER 50S. HIGHS
78 TO 88.
FRIDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS IN THE
MID TO UPPER 50S. HIGHS 73 TO 83.
.8 TO 14 DAY OUTLOOK FOR SEP 12 - 18 2026
BELOW NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
WAZ705-706-051330-
FOOTHILLS OF CENTRAL WASHINGTON CASCADES (ZONE 705)-
WATERVILLE PLATEAU (ZONE 706)-
INCLUDING THE CITIES OF CHELAN, WENATCHEE, WATERVILLE,
AND GRAND COULEE
238 PM PDT FRI SEP 4 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS
EARLY IN THE EVENING.
* CHANCE OF LIGHTNING...10 PERCENT.
* MIN TEMPERATURE.....47-53.
* 24 HR TREND........1 DEGREE COOLER.
* MAX HUMIDITY........60-75 PERCENT.
* 24 HR TREND........15 PERCENT DRIER.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......SOUTH UP TO 6 MPH IN THE EVENING SHIFTING TO
THE NORTH 3 TO 8 MPH OVERNIGHT.
* MIXING HEIGHT.......6500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (396) IN THE EVENING DECREASING TO
LOW (41) OVERNIGHT.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS IN
THE AFTERNOON.
* CHANCE OF LIGHTNING...10 PERCENT.
* MAX TEMPERATURE.....68-77.
* 24 HR TREND........4 DEGREES WARMER.
* MIN HUMIDITY........35-40 PERCENT.
* 24 HR TREND........UNCHANGED.
* 20-FOOT WINDS.......NORTH 3 TO 8 MPH IN THE MORNING SHIFTING TO
THE SOUTHEAST 3 TO 6 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....EAST 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (457).
SATURDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS.
* CHANCE OF LIGHTNING...10 PERCENT.
* MIN TEMPERATURE.....48-54.
* MAX HUMIDITY........61-80 PERCENT.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......WEST 3 TO 5 MPH IN THE EVENING SHIFTING TO
THE NORTH 3 TO 8 MPH OVERNIGHT.
* MIXING HEIGHT.......5000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...MODERATE (308) IN THE EVENING DECREASING TO
LOW (49) OVERNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY SUNNY. A CHANCE OF RAIN SHOWERS IN THE
LATE MORNING AND AFTERNOON.
* CHANCE OF LIGHTNING...10 PERCENT.
* MAX TEMPERATURE.....70-79.
* MIN HUMIDITY........35-40 PERCENT.
* 20-FOOT WINDS.......NORTH 3 TO 11 MPH.
* MIXING HEIGHT.......6500 FT AGL.
* TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...HIGH (511).
FORECAST DAYS 3 THROUGH 7...
LABOR DAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 51 TO
58. HIGHS 72 TO 81. WEST WIND 5 TO 15 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 50 TO 58. HIGHS 72 TO 82.
SOUTHEAST WIND UP TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 53 TO 61. HIGHS 77 TO 87.
NORTHWEST WIND UP TO 10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 55 TO 63. HIGHS 78 TO 87.
FRIDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 54 TO 61.
HIGHS 73 TO 82.
.8 TO 14 DAY OUTLOOK FOR SEP 12 - 18 2026
BELOW NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.
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